Roberts Gorden CorayVac Classic SF Series, Руководство по эксплуатации и обслуживанию

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CRVSF-S
ERIES
I
NSTALLATION
, O
PERATION AND
S
ERVICE
M
ANUAL
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the temperat u re setpoint, the mod u lating thermostat
and the VFD w ill red u ce the signal o u tp u t, in t u rn
red u cing the heater firing rate. Upon satisfying
temperat u re setpoint, the mod u lating thermostat and
the VFD w ill either:
1. T u rn off heater.
2. Red u ce the signal so that the minim u m heating
firing rate is maintained u ntil the sensed tem-
perat u re rises abo v e the setpoint to a c u t-off
limit temperat u re w hen the mod u lating thermo-
stat t u rns off the heater.
13.4 SPST Transformer Relay Kit (P/N 90417600K)
The transformer relay w iring diagram is sho w n on
Page 47, Figure 29 . The transformer relay can be
u sed to control an EP-100 or EP-201 p u mp
CORAYVAC
®
CLASSIC SF system. The single pole
relay can only be u sed to control one zone of
b u rners. The electrical circ u it is a 120 V AC (20 A)
s u pply. The transformer 24 V AC o u tp u t for the
thermostat is rated at 40 V A. Thermostats u sed w ith
the transformer m u st not exceed this po w er
req u irement.
A transformer relay operated system w ill not gi v e any
post p u rge p u mp operation to completely exha u st
prod u cts of comb u stion from the system or pro v ide
indication of operating conditions.
13.5 SPDT Transformer Relay (P/N 90436300)
The transformer relay w iring diagram is sho w n on
Page 49, Figure 31 . The transformer relay can be
u sed to control an EP-100 or EP-201 p u mp
CORAYVAC ® system. The do u ble pole relay can only
be u sed to control t w o zones of b u rners. The
electrical circ u it is a 120 V AC (20 A) s u pply. The
transformer 24 V AC o u tp u t for the thermostat is
rated at 40 VA. Thermostats u sed w ith the
transformer m u st not exceed this po w er req u irement.
A transformer relay operated system w ill not gi v e any
post p u rge p u mp operation to completely exha u st
prod u cts of comb u stion from the system or pro v ide
indication of operating conditions.